Orin B Trimble was
born Nov 19, 1915 and
died Aug 20, 1978 in Bay County Michigan
Irene Grace Hemstreet Trimble was
born Nov 7, 1920 and
died Oct 6, 1993 in Bay County, Michigan
Have you tried to get a copy of the obits from the Bay City Newspaper ??
The obits might list the date of marraige ..